Franz thinks



April 8 1924. 1,489,801

F. TRINKS CALCULATING MACHINE Filed Nov. 9, '1921 2 Sheets-Sheet. 1

5: I Hnventor A? Franz Trinks April 8 1924. 1,489,801

F. TRINKS CALCULATING MACHINE Filed Nov. 9, 1921 2 Sheets-5heet 3Patented Apr. 8, 1924.

FRANZ DRINKS, OF BRUNSWICK, GERMANY.

CALCULATING MACHINE.

Application filed November 9, 1921 Serial No. 514,078.

T all whom it man concern:

Be it known that I, FRANZ THINKS, residing at Brunswick, Germany, haveinvented certain new and useful Improvements in Calculating Machines, ofwhich the followin is a specification.

y invention relates to improvements 1n calculating machines, and moreparticularl in calculating machines of the type in whic a settingmechanism cooperates with two registering mechanisms, and in which inaddition a revolutions counting mechanism is provided. By means ofmachines of this type multiplications can be performed in which thenumber of the figures of the result exceeds that of the numeral wheelsof each registering mechanism. The object of the improvements is toprovide a machine of this class in which at the end of the calculationthe multiplier is correctly displayed b the revolutions countingmechanism. Va ith this and other objects in view my invention consistsin the matters to be described hereinafter and particularly pointed outin the appended claims.

For the purpose of explaining the invention an example embodying thesame has been shown in the accompanying drawing, in which the sameletters of reference have been used in all the views to indicatecorresponding parts. In said drawing,

Fig. 1, is a front view of apart of the calculating machine,

Fi 2, is a vertical crom-section taken on the line 2-2 of Fig. 1 showingthe main revolutions counting mechanism and subsidiary revolutionscounting mechanism forming a part of the mam revolutions countingmechanism, and

Fig. 3 is a sectional elevation of the calculating machine showing thesetting mechanism, the registering mechanisms, and the main andsubsidiary revolutions counting mechanism.

In order that my invention be clearly understood I shall at firstdescribe the method now in use for performing a multiplication in whichthe number of the figures of the product exceeds that of the numeralwheels of each registering mechanism, reference being made to acalculatin machine of the construction shown and escribed in the tent ofthe United States No. 705,838 to amann, granted July 29, 1902. A machineof this construction has been shown in Fig. 3 of the accompanyingdrawings, and

in addition the parts forming the subject matter of my invention havebeen shown as embodied in the said machine.

Referring at first to the-old parts of the said calculating machine, thesetting mechanism p consists of a rotary shaft 8 carryin setting wheels1 each containing nine test 2 any number of which may be shiftedoutwardly by cam disks'3 provided one for each wheel. The setting wheelsare adapted to be rotated from a machine crank 6 through theintermediary of gears 4: and 5. In front of the setting mechanism thereis a registering mechanism g adapted to be operated by the settingmechanism through the intermediary of a gear wheel 7, as is known in theart. Below the registering mechanism q there is a second registeringmechanism 1' ada ted to be coupled with the registering mec anism g byintermediate. gear wheels 8 provided one for each of the numeral wheelsof the registering mechanisms q and 1'. The gear wheels 8 are, rotatablymounted on a shaft 8 supported on arms 1" havingrocking supports on theshaft 1' carryin the numeral wheels of the registering mec anism r, andthey are adapted to be thrown into or out of engagement with the gearwheels of the reglstering mechanism g by rocking the arms'r and theshaft a mounted thereon by means of a bell crank lever t. Bothregistermg mechanisms 9 and r are mounted on a carriage 0 adapted to beshifted relatively to the setting mechanism 72 in a direction parallelto the axis thereof.

Above the setting mechanism there is a revolutions counting mechanism dthe numeral wheels of which are connected each with a gear wheel 2'. Therevolutions counting mechanism (.1 is adapted to be rotated from themachine crank 6 through the intermediary of a ]gear wheel 5 engaging ina gear wheel 11 eyed to a shaft 12. On the said shaft a single toothwheel 13 is longitudinally shiftable, which is connected with thecarriage o by an arm 14.' Upon each revolution of the machine crank 6the single tooth wheel advances one of the gear wheels 15 and the gearwheel 1' meshing therewith a distance corresponding to one value.

The parts so far described are known in the art. In order to perform amultiplication the intermediate gear wheels 8 are rocked into engagementwith the gear wheels of the registering mechanism 9, and themultiplication is carried out by means of the setting mechanism p bothregistering mechanisms g and r, until the capacity of the registeringmechanisms is exhausted, which is indicatetd by a bell or the like. Inthe course of this calculation the carria o is successivel shifted tothe right acco ing to the num er of the figures of the multiplier. Nowthe carriage o is returned nto initial position, so that theintermediate gear wheel 7 located at the right of the set ofintermediate gear wheels is in position for cooperation with the firstsetting wheel 1. The intermediate gear wheels 8 are rocked out ofengagement with the gear wheels of the registering mechanism 9, theregistering mechanism q is reset, and from the figures displayed hiv there stering mechanism 1' those ocate at the le t of the single toothwheel, before the carriage 0 was shifted, are carried over to the righthand numeral wheels of the registering mechanism g, which is done forexample by hand after opening the top plate of the machine, or which maybe done by setting the said number on the setting mechanism 12 and onceoperating the machine crank 6. Now the multiplication is completed bymeans of the multiplicand set in the setting mechanism and the remainingfigures of the multiplier, and the partial result thus obtained in theregisterin mechanism 9 is added to the partial resu t of the firstcalculat on which is still displayed by the registering mechanisrn'g.

Example: By means of a calculating machine .having two registeringmechanisms 1% and 1* each comprising ten numeral whee the mutiplicationis to be performed.

The number 3232323 is first set on the setting mechanian and multipliedfour times by 2 while successively shiftin the carriage o carryin theregisterin mec anisms q and r. There y the number 182221706 istransmitted to the registering mechanism. Now

the carriage 0 is shifted to the left and into initial position, theframe 1'' is rocked downwardly with the gear wheels 0 out of engagementwith the gear wheels of the registering mechanism q and the registeringmechanism g is reset. As the carriage has been shifted to the fourthplace and back again the last four fi res of the partial result havebeen determined. Accordingly the remaining figures 718222 are nowtransmitted to the second registering mechanism, whereupon the carriagecarrying the registering mechanisms is again set in o rative positionand the calculation is continued in the usual way by multiplying thenumber 3232323 by 22. Now the second re istering mechanism di' lays thenumber %1829328 which is combined with the number 1706 left onthe firstregistering mechanism into the final result 718,293,281,706.

When thus performing the calculation the revolutions counting mechanismdoes not display the correct multiplier 222222 but the number 2244. Theobject of the improvements is to avoid this error. For this reason Iprovide an indicating mechanism or subsidiary revolutions countingmechanism cooperating with the main revolutions counting mechanism andtaking part in the movement thereof, which indicating mechanism isadapted to be rocked out of operative position at the end of the firstpartial calculation for preserving the partial multiplier (2222), sothat after resetting the main revolutions counting mechanism the secondpart (22) of the multiplier can be displayed thereby. The tru multiplieris obtained by combining both partial multipliers (2222; 22:222222).

In the example shown in the figures the indicating mechanism consists ofa set of gear wheels a and numeral wheels 1) con nected therewith, saidwheels being loosely mounted on a shaft h secured to rock arms 0. Thenumeral wheels I) are adapted to be rotated from the gear wheels 2' ofthe revolutions counting mechanism d throu h the intermedia of gearwheels 6, an they are adapt to be thrown out of operation by locking therock aims c and the indicating mechanism mounted thereon away from thegear wheels e. To the rock arms a noses m are secured which are adaptedto engage in either one of a pair of notches (7 provided one in each ofspring p locking pawls f for securing the indicating mechanism inoperative and inoperative sitions. The revolutions countin mec anism dand the indicating mechanism 12 are equipped with resetting means of anyknown or preferred construction represented in Fig. 1 by wing nuts k andZ.

In the preferred construction shown in the figures the resettingmechanism In of the main revolutions counting mechanism d is equippedwith a cam n cooperating with the subsidiary revolutions countingmechanism 6 through suitable 'ng for rockingthe same into inoperativeposition when resetting the main revolutions counting mechanism. Thesubsidiary revolutions counting mechanism is rocked into 0 rativeposition by hand, for example b epressing the rock arms 0 by means 0 thewing nuts Z.

The revolutions counting mechanism and the indicating mechanism are usedas follows: When performi the first partial multiplication both mecanisms are in operative positions, the revolutions counting mechanism dbeing rotated from the machine crank 6 and transmitting such rotation tothe indicating mechanism b through the intermediary of the gears a. Atthe end of the partial mu tiplication both mechanisms show the number2222. Now the revolutions counting mechanism. d is reset, and theindicating mechanism 6 is rocked by the cam n out of engagement with theintermediate ar wheels e, whereupon the second artlal multiplication isperformed by whic the number 22 is transmitted to the revolutionscounting mecha nism (1. Finally the parts of the multiplier are combined(22, 2222:222222). Before starting a new calculation both mechanisms arereset.

I claim:

1. In a calculating machine, the combination, with the settingmechanism, and two registering mechanisms movable relatively to thesetting mechanism, of main revolutions counting mechanism, andsubsidiary revolutions ccunti mechanism adapted to be thrown out orelation for operation by the setting mechanism.

2. In a calculating machine, the combination, with the settingmechanism, and two registering mechanisms movable relatively to thesetting mechanism, of main revolutions counting mechanism, andsubsidiary revolutions counting mechanism adapted to be set into and outof cooperation with said main registering mechanism.

si iary mechanism in ino rative 3. In a calculating machine, thecombination, with the setting mechanism, and two registering mechanismsmovable relatively to the setting mechanism, of main revolutionscounting mechanism, subsidiary revolutions counting mechanism adapted tobe set into and out of cooperation with said main revolutions countinmechanism, and means to lock said subsidiary revolutions countingmechanism in operative and inoperative positions.

4. In a calculating machine, the combination, with the settingmechanism, and two registering mechanisms movable relatively to thesetting mechanism, of main revolutions counting mechanism, resettingmeans therefor, subsidia revolutions counting mechanism a apte to be setinto and out of cooperation with said main revolutions mechanism, andmeans intermediate said resetting means and subsidiary revolutionscounting mechanism adapted when 0 eratin the resetting mechanism to setsaid subosition.

In testimony whereof have a ed my signature in presence of twowitnesses.

FRANZ TRINKS. Witn:

INGEBORG Fmmmon.

